Research Activities/ Publications /Lecture Notes & Review Articles /
HDR & PhD thesis / Talks

(Personal homepage of Dominique Spehner)

Publications / Preprints (for review articles click here)

Quantum Information, Cold Atomic Gases, Decoherence & Open Quantum Systems

• N. Rougerie, D. Spehner, Interacting bosons in a double-well potential: localization regime,
  arXiv:1612.05758 [math-ph]
  
• W. Roga, D. Spehner, and F. Illuminati, Geometric measures of quantum correlations: characterization,
  quantification, and comparison by distances and operations,
  J. Phys. A: Math. Theor. 49 (23), 235301 (2016) [PDF (23400 KB)]
  
• S.A. Reyes, L. Morales-Molina, M. Orszag, and D. Spehner, Harnessing gauge fields for maximally
  entangled state generation, Eur. Phys. Lett. 108 (2014), 20010 [PDF (1134 KB)]
  
• D. Spehner, K. Pawlowski, A. Minguzzi, and G. Ferrini,
  Effect of one-, two-, and three-body atom loss processes on superpositions of phase states in
  Bose-Josephson junctions, Eur. Phys. J. B  87 (2014), 157 [PDF (1652 KB)]
  
• D. Spehner and M. Orszag,
  Geometric quantum discord with Bures distance: the qubit case
   J. Phys. A: Math. Theor. 47 (2014), 035302 [PDF (739 KB)]
  
• D. Spehner and M. Orszag,
  Geometric quantum discord with Bures distance
  New Journal of Physics 15 (2013), 103001 [PDF (496 KB)]
• K. Pawlowski, D. Spehner, A. Minguzzi, and G. Ferrini,
  Macroscopic superpositions in Bose-Josephson junctions: Controlling decoherence due to atom losses
  Phys. Rev. A 88 (2013), 013606 [PDF (1924 KB)]
•  W. De Roeck and D. Spehner,
  Derivation of some translation-invariant Lindblad equations for a quantum Brownian particle,
  J. Stat. Phys. 150 (2013), 320 [PDF (1125 KB)]
• G. Ferrini, D. Spehner, A. Minguzzi, and F.W.J. Hekking,
  Effect of phase noise on quantum correlations in Bose-Josephson junctions
  Phys. Rev. A 84 (2011), 043628 [PDF (320 KB)]
  
• S. Vogelsberger and D. Spehner,
  Average entanglement for Markovian quantum trajectories,
  Phys. Rev. A 82 (2010), 052327 [PDF (320 KB)]
  
• G. Ferrini, D. Spehner, A. Minguzzi, and F.W.J. Hekking,
  Noise in Bose Josephson junctions: Decoherence and phase relaxation,
  Phys. Rev. A 82 (2010), 033621 [PDF (324 KB)]
  
• D. Spehner and F. Haake,
  Quantum measurements without macroscopic superpositions, 
  Phys. Rev. A 77 (2008),  052114 [PDF (536 KB)].
  
• D. Spehner and F. Haake,
  Decoherence bypass of macroscopic superpositions in quantum measurement,
  J. Phys. A: Math. Theor. 41 (2008), 072002 [PDF (244 KB)].
• R. Rebolledo and D. Spehner,
  Adiabatic limits and quantum decoherence, in: ``Stochastic Analysis in Mathematical Physics'',
  Proceedings of a Satellite Conference of ICM 2006 (Lisbon, Portugal, 4-8/10/2006), p. 94
  Eds. G. Ben Arous, A. B. Cruzeiro, Y. Le Jan and J.-C. Zambrini (World Scientific, 2008)
• D. Spehner and F. Haake,
  Quantum measurements without Schrödinger cat states,
  J. Phys.: Conf. Ser. 84 (2007), 012018 [PDF (964 KB)]
  
• D. Spehner and M. Orszag,
  Cavity QED: a quantum trajectory point of view, Laser Physics 13 (2003), 634-643.
  
• D. Spehner and M. Orszag,
  Temperature-enhanced squeezing in cavity QED,
  J. Opt. B: Quantum Semiclass. Opt. 4 (2002), 326-335  [PDF (239 KB), Gzipped PS (293 KB)].
• D. Spehner and M. Orszag,
  Quantum jump dynamics in cavity QED, J. Math. Phys. 43 (2002), 3511-3537 [PDF (611 KB)].
• D. Spehner and J. Bellissard,
  The quantum jump approach for infinitely many states, in: ``Modern Challenges in Quantum Optics'',
  Lecture Notes in Physics 575, Eds M. Orszag and J.C. Retamal, 355-376 (Springer, 2001) [PDF, PS]
  
• D. Spehner and J. Bellissard,
  A kinetic model of quantum jumps, J. Stat. Phys. 104 (2001), 525-566  [PDF, PS].

• A. Faggionato, H. Schulz-Baldes, and D. Spehner, 
  Mott law as lower bound for a random walk in a random environment,
  Comm. Math. Phys. 263 (2006), 21-64  [PDF (444 KB),Gzipped PS (439KB)].

• M. Turek, D. Spehner, S. Mueller, and K. Richter,
  Semiclassical form factor for spectral and matrix element fluctuations of multi-dimensional chaotic
  systems , Phys. Rev. E 71 (2005), 016210  [PDF].
• D. Spehner,
  Spectral form factor of hyperbolic  systems: leading off-diagonal approximation,
  J. Phys. A: Math. Gen. 36 (2003), 7269-7290  [PDF (315 KB)].
• R. Narevich and D. Spehner,
  Weyl expansion of a circle billiard in a magnetic field,
  J. Phys. A: Math. Gen. 32  (1999), L227-L230  [PDF (107 KB), GZipped PS (119 KB)].
• D. Spehner, R. Narevich, and A. Akkermans,
  Semiclassical spectrum of integrable systems in a magnetic field,
  J. Phys. A: Math. Gen. 31 (1998), 6531-6545  [PDF (220 KB), GZipped PS (152 KB)].
• R. Narevich, D. Spehner, and A. Akkermans,
  Heat kernel of integrable billiards in a magnetic field,
  J. Phys. A: Math. Gen. 31 (1998), 4277-4287  [PDF (161 KB), Gzipped PS (80.6 KB)].

Lecture Notes & Review Articles

• D. Spehner, F. Illuminati, M. Orszag, W. Roga, Geometric measures of quantum correlations with
  Bures and Hellinger distances, chapter of the book Lectures on General Quantum Correlations and
  their Applications, eds. F. Fanchini, D. Soares-Pinto, G. Adesso (Springer, to be published), 
  arXiv/1611.03449 [quant-ph]
• D. Spehner,
  Quantum correlations and distinguishability of quantum states,
  J. Math. Phys. 55(7) (special issue: Nonequilibrium statistical mechanics) (2014), 075211 [PDF (1273 KB)]
  
• D. Spehner,
  Models for Quantum Measurements (lecture notes for the winter school "Aspects of Quantum Dynamics",
  Grenoble, 3-7/11/2008) [PDF (540 KB)]
  

Habilitation à Diriger des Recherches (HDR) 

PhD Thesis  

Selected Talks

• January 2016: Quantum correlations, Schrödinger cat states, and decoherence (talk given at the Colloqium of the
  Instituto de Física, Pontificia Universidad Católica de Chile, Santiago) [Slides (PDF)].
  
• October 2015: Geometry on the set of quantum states and quantum correlations (talk given at GSI'2015, École
  Polytechnique, France) [Slides (PDF)].
• April 2015:  Measurements, decoherence, and quantum correlations in composite quantum systems (talk given for the
  defense of my HDR, Grenoble, France) [Slides (PDF)].
• October 2014:  Geometric quantum discord (talk given at the conference "Quantum Optics VII", Mar del Plata, Argentina)
  [Slides (PDF)].
• July 2013:  Quantum Correlations in bipartite quantum systems (first lecture given at the summer school "Advances in
  Open Quantum Systems",  Autrans, France) [Slides 1 &  2 (PDF)].
• July 2013:  Bipartite systems coupled to two baths: time evolution of entanglement (second lecture given at the summer
  school "Advances in Open Quantum Systems", Autrans, France) [Slides (PDF)].
• November 2010: Entanglement evolution for quantum trajectories (talk given at the conference "Quantum Optics V",
  Cozumel, Mexico) [Slides (PDF)].
  
• March 2007: Mott law for a random walk in a random medium (talk given at the conference ``Transport in
  multi-dimensional random Schrödinger operators'', Oberwolfach, Germany)  [Slides (PDF)].
• November 2006: Decoherence in quantum measurements  (talk given at the``Open System Days'' in
  Centre de Physique Théorique, Marseille, France)  [Slides (PDF)].
• March 2006: Hopping transport in Disordered Solids (talk given at the conference ``Transport Properties of
  random Schrödinger operators'', Lexington, USA)  [Slides (PDF)].
• July 2005:  Cavity QED: a Quantum Trajectory Point of View (talk given at the Center for Nonlinear
  Phenomena and Complex Systems, Université Libre de Bruxelles, Belgium) [Slides (PDF)].
• June 2004: Corrélations spectrales dans les systèmes classiquement chaotiques (talk at the Centre de
  Physique Théorique, Marseille, France)  [Slides (PDF), in French].